Eleven years after its release, An Inconvenient Truth, the iconic climate documentary, has spawned a sequel. But did the original do more harm than good by polarizing Americans on climate change?

Former US Vice President and Chair of the Climate Reality Project Al Gore and Victoria’s climate and energy minister Lily D'Ambrosio (right) ride on a tram after speaking at the climate conference in Melbourne.
AAP/Tracey NearmyAugust 15, 2017